First, preheat the oven to 400 degrees Fahrenheit.
Second, bring a medium-sized pot of water to a boil then add spaghetti noodles (either whole or broken in half).
Third, cook on medium heat for 6 minutes uncovered, stirring occasionally.
Forth, while pasta is cooking, add tomatoes, salt, pepper, garlic powder, diced onion, Italian seasoning, cream cheese, and olive/avocado oil to a blender. Blend at full speed for 30 seconds until everything is combined.
Fifth, drain spaghetti noodles and place them in a lightly buttered medium-sized casserole dish along with the sauce you just made.
Sixth, stir everything together, add shredded mozzarella evenly on top, and bake for 20 minutes. Enjoy!